Dürr Dental Gmbh & Co. Kg

Beko Technologies Gmbh

Duerr Dental Ag

Durr Dental Ag

Alfred Deubler

Herbert Schlensker

Jörg Rambow

Varleriu Fischer

Valeriu Fischer

A check valve comprising a valve housing, which comprises an inlet, an outlet, and a valve channel. The valve channel connects the inlet to the outlet and has a valve seat. The check valve further comprises a closure part, which cooperates with the valve seat, and a tappet bearing the closure part. An end of the tappet which is remote from the closure part bears a control piston, which together with a cylinder wall defines a control chamber, which is connected a control connection. The control chamber is connected to the valve channel by means of a connection channel.

Check valve

A vertically directed dryer unit () for compressed air, comprising a dryer cartridge () which, together with a housing (), defines an inlet head area () and an outlet head area (). A plurality of hollow membrane fibers () extend inside the cartridge between the two head areas, the wall material thereof being more permeable with respect to water vapor than air. An outlet valve () is provided between the outlet head area () and an outlet () of the drier unit. Said valve only opens when the pressure in the outlet head area () produces sufficient pressure for the provision of purging air. The purging air is fed to the outer surface of the membrane fibers () via a throttle element ().

Dryer unit for compressed air and other gaseous media

A vertically directed dryer unit for compressed air, comprising a dryer cartridge which, together with a housing, defines an inlet head area and an outlet head area. A plurality of hollow membrane fibers extend inside the cartridge between the two head areas, the wall material thereof being more permeable with respect to water vapor than air. An outlet valve is provided between the outlet head area and an outlet of the drier unit. Said valve only opens when the pressure in the outlet head area produces sufficient pressure for the provision of purging air. The purging air is fed to the outer surface of the membrane fibers via a throttle element.

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Freiberg, Germany

Alfred Deubler